Metal-frame fly-screen.



W. D. CRANE ER.

METAL FRAME FLY SCREEN.

APPLICATION FILED MAY I. 1915.

1,178,219.. Patented Apr. 4, 1916.

F; A. T19.

METAL-FRAME FLY-SCREEN.

Specification of Letters Patent.

Patented Apr. 41, rare.

Application filed May 1, 1915. Serial No. 25,240.

To all whom it may concern Be it known that 1, WILLIAM DE ALTON CRAMER, of Philadelphia, in the County of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Metal-Frame Fly-Screens; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to a window screen,

' and particularly to that type which is constructed of metal, and is made so as to be easily removedfrom the window frame.

It is one of the objects of my invention to provide a screen of the character abovementioned which is simple in construction, always remains tight in the window, as regards lateral displacement, and yet slips up and down easily and may be laterally displaced when pressure is applied to the screen for removing the same from the window frame. I

Another object of my invention resides in the provision of a novel key and spline means for fastening the wire cloth upon the screen frame. And still another novel feature of my invention consists in the corner construction whereby the sides, top and bottom of the frame are constructed in separate pieces and .joined together with a practical corner fastening which, when in place, forms a part of the sides of the frame.

A further novel feature resides in the provision of means for locking the keys in the splines, thereby holding the wire cloth firmly in a stretched and set position.

In the drawings annexed .hereto, and in which I have illustrated one specific embodiment of my invention: Figure 1 is an elevation of the inside face of the screen. Fig. 2 is an elevational view of the exterior surface. Fig. 3 is a vertical section through the lower corner of the screen. Fig. 1 is a perspective view of the corner construction showing the manner in 'which the corner fastening member is put into position. Fig. 5 is a section on the line 55 of Fig. 2. Fig. 6 is a perspective view, showing one of the bottom members comprising the frame in section.

In the window screen illustrated in the drawings for the purpose of showing the.

principle of my invention, the frame is constructed of two side members 1 of hollow formations as shown at 2. One edge of each of these members 1 is grooved as at 3 so as to provide for the frame sliding upon the metal covered ribs 4 which are attached to the windowframe and guide the frame when it is raised up or down. Each of the members 1 is splined on its inside edge as at 5 for a purpose to be hereinafter set forth. That portion of each of the side members which issplined is mitered as at 6, to form a right angle joint with the top and bottommembersofthe frame which are similarly mitered. However the hollow portions of both the side members and the top and bottom members are squared ofi' as shown so that when the members comprising the frame are set up a rectangular shaped cut-out is left at each corner.

The top and bottom members? are formed similar to the side members 1 but are not provided with grooves in the edge thereof since these do not engage any ribs. However these members are splined at 8 so that when the frame is set up, as shown inFigs 1 and 2, a continuous spline runs around the frame adjacent the margin of the aperture 9. I r

In order to hold the members of the frame together at the corners, I provide corner fastening members each comprising a body portion 10 provided with tongues 12 and 13, the former 12 being for entrance into the hollow 2 of a side member and the latter 13 being for entrance into the hollow of the end members of the frame, namely, the top and bottom members. The body portion is so made that, when the fastening member is in plaoe,,,the faces ther of are flush with the faces of the sidesand top and bottom members. The tongues 12 and 13 are made so as to fit snugly into their respective frame members and thus hold-the latter in position. The body portion 10 of each corner member is provided on one side with a groove 1t which, when the corner member is in position, alines with the groove in the side member and forms a continuation thereof.

In applying the wire cloth 15 to the frame to cover the aperture 9, the wire cloth is stretched over the aperture and the edges thereof are forced into the splines by key members 16 which are then looked in the splines by screws 17 extending through the frame members and are fastened in the keys 16. This serves also to lock the corner fastening members in position for the side, 7

top and bottom members cannot be taken apart without first removing the wire cloth. The springs 18 are provided in one of the grooves 3 of a side member so as to allow the screen to move laterally for removing the frame from the window frame and yet which act to hold it tightly 1n place until I manually removed. Alsothe frame is pro- Vided with handles 19 for grasping it to either slide it up or down or to remove it.

My screen is preferably manufactured from sheet metal and it will be evident that its simple construction makes an article which may be cheaply pressed out and assembled. It is to be understood, however, that I do not limit myself to the specific embodiment of my invention herein illustrated and described except in so far as the claims import.

I claim:

1. Aseparable frame for window screens, comprising a plurality of tubular members formingthe top, bottom and sides thereof, removable corner fastening members, each of which comprise a rectangular body portion forming the corners of the frame structure, and tongues projecting from said body portion at right angles to each other into the hollow portion of the tubular'members tolock said tubular members in rectangular form.

2. A window screen comprising a separable frame consisting of a, plurality of tubular members forming the top, bottom and sides thereof, each of said members being splined adjacent to its inner edge, removable corner fastening members, each of which comprise a rectangular body portion forming the corners of the frame structure and tongues projecting from said body portion into the hollow portion of the tubular members to lock said tubular members in rectangular form, 'wire cloth stretched between said frame and-over said splines, and key membersset in said splines and engaging said wire cloth to hold the latter in place, substantially as described.

3. A window screen comprising a' separable frame consisting of a plurality of tubular members forming the top, bottom and sides thereof, each of said members being splined adjacent to its inner edge, removable corner fastening members, each of which comprise a rectangular body portion forming the corners of the frame structure and tongues projecting from said body portion into the hollow portion of the tubular members to lock said tubular members in rectangular form, wire cloth stretched between said frame and over said splines, 'key members set in said splines and engaging said wire'cloth to hold the latter in place, and means for locking said splines in set position, substantially as described.

In testimony whereof, I have signed this specification in the presence of tWo subscribing witnesses.

WILLIAM D. CRAMER. Witnesses:

O. B. LANsINGER, M. E. WING. 

